diff --git a/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/team/Team.java b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/team/Team.java
new file mode 100644
index 0000000..889bdad
--- /dev/null
+++ b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/team/Team.java
@@ -0,0 +1,20 @@
+package net.szymonsawicki.reactivetimesheetapp.domain.team;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import net.szymonsawicki.reactivetimesheetapp.domain.user.User;
+
+import java.util.List;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+@EqualsAndHashCode
+public class Team {
+    String id;
+    String name;
+    User lead;
+    List<User> mambers;
+}
diff --git a/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/TimeEntry.java b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/TimeEntry.java
new file mode 100644
index 0000000..1562ad2
--- /dev/null
+++ b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/TimeEntry.java
@@ -0,0 +1,22 @@
+package net.szymonsawicki.reactivetimesheetapp.domain.time_entry;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import net.szymonsawicki.reactivetimesheetapp.domain.time_entry.type.Category;
+
+import java.time.LocalDate;
+import java.time.LocalTime;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+@EqualsAndHashCode
+public class TimeEntry {
+    LocalDate date;
+    LocalTime timeFrom;
+    LocalTime timeTo;
+    Category category;
+    String description;
+}
diff --git a/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/type/Category.java b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/type/Category.java
new file mode 100644
index 0000000..529002d
--- /dev/null
+++ b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/time_entry/type/Category.java
@@ -0,0 +1,5 @@
+package net.szymonsawicki.reactivetimesheetapp.domain.time_entry.type;
+
+public enum Category {
+    DEVELOPMENT, SUPPORT, MEETING, OTHER;
+}
diff --git a/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/User.java b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/User.java
new file mode 100644
index 0000000..dd88ac3
--- /dev/null
+++ b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/User.java
@@ -0,0 +1,18 @@
+package net.szymonsawicki.reactivetimesheetapp.domain.user;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import net.szymonsawicki.reactivetimesheetapp.domain.user.type.Role;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+@EqualsAndHashCode
+public class User {
+    String username;
+    String password;
+    Role role;
+    String teamId;
+}
diff --git a/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/type/Role.java b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/type/Role.java
new file mode 100644
index 0000000..00b743b
--- /dev/null
+++ b/src/main/java/net/szymonsawicki/reactivetimesheetapp/domain/user/type/Role.java
@@ -0,0 +1,5 @@
+package net.szymonsawicki.reactivetimesheetapp.domain.user.type;
+
+public enum Role {
+    LEAD,DEVELOPER,TESTER;
+}